CN2781014Y - Vehicle liquified petroleum gas injection system for two-fuel supply system - Google Patents
Vehicle liquified petroleum gas injection system for two-fuel supply system Download PDFInfo
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- CN2781014Y CN2781014Y CNU2004200822686U CN200420082268U CN2781014Y CN 2781014 Y CN2781014 Y CN 2781014Y CN U2004200822686 U CNU2004200822686 U CN U2004200822686U CN 200420082268 U CN200420082268 U CN 200420082268U CN 2781014 Y CN2781014 Y CN 2781014Y
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- lpg
- petroleum gas
- liquefied petroleum
- gas cylinder
- fuel supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The utility model discloses a vehicle liquified petroleum gas (LPG) injection system for two fuel supply systems, which comprises an LPG gas cylinder, an LPG pump, an LPG fuel distributing pipe, LPG injectors, an electronic control unit, and a fuel transfer switch, wherein the LPG gas cylinder is connected with a transmission pipeline; the LPG pump is placed in the LPG gas cylinder; the LPG fuel distributing pipe is connected with the LPG gas cylinder through the transmission pipeline; the LPG injectors are connected with the LPG fuel distributing pipe; the electronic control unit is connected with the LPG gas cylinder and the LPG injectors and controls the extraction, the transmission and the injection of LPG; the fuel transfer switch is connected with the electronic control unit and is used for switching two fuel supply systems; the LPG injectors are a plurality of electromagnetic valve injectors, and the LPG fuel distributing pipe comprises an LPG pressure transducer inside; the LPG gas cylinder comprises an LPG temperature sensor inside, and the transmission pipeline comprises an air inlet pipe and an air return pipe; the electronic control unit is also connected with a gasoline supply system in the two fuel supply systems to control the supply of gasoline, and the transfer switch switches the two fuel supply systems.
Description
Technical field
The utility model relates to a kind of liquefied petroleum gas injection, more particularly, relates to a kind of Vehicular liquefied petroleum gas ejecting system that is used for dual fuel supply system.
Background technique
The petroleum resources deficiency of China along with the fast development of automotive industry, shows outstanding demand contradictory day, more and more dependence on import.This state directly has influence on the energy security of China.Therefore develop and apply the vehicle fuel of other non-petroleum bases, be raw material for example, be raw material with the rock gas and be that the vehicle fuel of raw material will become very main from now on task with the biology with the coal.
Liquefied petroleum gas (LPG) (LPG) is from the associated gas of petroleum production process or the by-product of petroleum refining process.The key component of automotive LPG is propane and butane.The good LPG of makings adds the suitable motor of design coupling, can obtain good emission performance.The price of LPG generally is lower than gasoline, and it brings good economic benefit to transport service, also helps reducing the discharging of automobile.LPG slightly pressurizes with regard to liquefiable at normal temperatures, is easy to carry, and shared volume is little, and continual mileage is long, and the gas station construction cost is low relatively, and most cases can realize that oil gas closes the station, does not need too much to take valuable urban land resource.Therefore be a kind of alternative fuel that automobile uses that is suitable for very much, be widely used in world many countries.
The LPG automobile that has many repackings in the market has gasoline/LPG two cover fuel system.With reference to figure 1, Fig. 1 is a kind of structural drawing of gasoline/LPG bifuel system 100 of present use.It comprises: LPG gas cylinder 102, have LPG limit the quantity of filling valve 104 and solenoid valve 106, and be used to control the output that adds tolerance and control LPG of LPG; LPG gas cylinder 102 comprises that also filling liquid gas adds gas port 108, is used for filling LPG to LPG gas cylinder 102; Level meter 110 is used for showing that the residue LPG of LPG gas cylinder 102 measures; The liquid LPG of output is transfused in the LPG decompression evaporator 117 from LPG gas cylinder 102, is sent to gaseous state then and exports sparger 114 in the gas distributor 112 to after distribution, is sprayed by sparger 114; In the process of spraying, also come the flow of adjustments of gas by a throttle body 115; Before gas distributor 112, have a solenoid valve 116 and filter cleaner 118; The extraction of whole LPG, transmission and injection are all carried out under the control of LPG electronic control unit 120; LPG electronic control unit 120 is also connected to gasoline electronic control unit 122 and fuel shift switch 126, and (gasoline controller 122 is used to control the work of gas supply system, the gas supply system is identical with general automobile gasoline supply system, so just no longer describe in detail here); Gasoline controller 122 uses the situation of gasoline by lambda sensor 124 monitoring motors, and by and the interconnection of LPG electronic control unit 120 realize the exchange of information, and fuel shift switch 126 is used for switching between the fuel supply system of two kinds of controllers and control thereof.
In above-mentioned this LPG system, employing be the Carburetor principle, LPG is the continuous injection inlet casing behind overflash, but the continuous direct injection of LPG gaseous state the tempering problem occurs through regular meeting.Simultaneously, distributor far can cause signal acceptance blunt from sparger.Because mostly existing LPG supply system is in the system with the car repacking, therefore adopt different controllers to control respectively with the gas supply system, this just make sensor and control unit need with two controller communications, cause the complexity of double-controller system and loaded down with trivial details, communication time is longer, makes the switching of LPG and two kinds of fuel of gasoline seem more blunt.
So, just need a kind of LPG ejecting system that can simplify complicated transforming process and improve the defective that exists in the slow in reacting and injected in gaseous state mode of sparger in the prior art.
The model utility content
, LPG slow in reacting at nozzle in the prior art uses injected in gaseous state to have the tempering problem and adopts in the LPG ejecting system of dual controller communication complexity shortcoming slowly, the purpose of this utility model provides a kind of Vehicular liquefied petroleum gas ejecting system that is used for dual fuel supply system, it uses single controller to control, and the LPG sparger changed into have a plurality of electromagnetic valve type spargers, when spraying, adopt the consecutive order multi-point injection of liquid LPG.With the process of simplification control, and improve the performance that sparger sprays.
According to the utility model, a kind of Vehicular liquefied petroleum gas (LPG) ejecting system that is used for the dual-purpose fuel supply system is provided, comprising: the LPG gas cylinder, have delivery outlet and inlet opening, link to each other with transmission pipeline; The LPG pump is positioned in the described LPG gas cylinder, is used to export LPG; The LPG fuel rail is connected to described LPG gas cylinder by described transmission pipeline, has solenoid valve on the in-and-out pipe of described LPG fuel rail; The LPG sparger is connected to described LPG fuel rail, to engine spray LPG; Electronic control unit is connected to extraction, transmission and the injection of described LPG gas cylinder and LPG sparger, the described LPG of control; Fuel shift switch links to each other with described electronic control unit, is used for switching between two kinds of fuel supply systems; Wherein, described LPG sparger is a plurality of electromagnetic valve type spargers, the liquid LPG of consecutive order multi-point injection; Comprise the LPG pressure transducer in the described LPG fuel rail; Comprise the LPG temperature transducer in the described LPG gas cylinder; Described transmission pipeline comprises suction tude and muffler, and the delivery outlet of described LPG gas cylinder connects described suction tude, and the inlet opening of described LPG gas cylinder connects described muffler; Described electronic control unit is also connected to the gas supply system control gas supply in the dual fuel supply system, and described throw over switch switches two cover fuel supply systems.
According to an embodiment of the present utility model, the delivery outlet of described LPG gas cylinder has the solenoid valve that carries out flow control, also comprises liquid level sensor and aerating limit stoper.
According to an embodiment of the present utility model, the inlet opening of described LPG gas cylinder comprises that one is used to fill the connecting head of LPG.
According to an embodiment of the present utility model, described ejecting system is connected to the level meter that shows the LPG liquid level on the interior combination instrument of operator cabin.
Adopted after the technical solution of the utility model, adopt an electronic control unit to come integrated control gasoline and two kinds of working staties of LPG, shortened and adopted two controllers to control gasoline and two kinds of required communication times of this scheme of working state of LPG respectively, can make full use of the high characteristics of LPG anti-knock index, utilize power and the torque ratio burns gasoline characteristics slightly high, that fuel consumption more economize of motor when burning LPG to reach energization consumption reduction effect.Emitter construction of the present utility model adopted the liquid order multipoint injection system of electromagnetic valve type spray sparger, the tempering problem that has often occurred when having solved the continuous direct injection of LPG gaseous state.
Description of drawings
Feature of the present utility model and advantage will become more obvious after following detailed description in conjunction with the accompanying drawings and embodiments, identical in the accompanying drawings mark is represented identical assembly all the time, wherein:
Fig. 1 is the structural drawing of the LPG ejecting system of available technology adopting controller;
Fig. 2 is an example structure figure of LPG ejecting system of the present utility model;
Fig. 3 is the detailed structure view according to an embodiment of LPG ejecting system of the present utility model.
Embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
The main improvement of the utility model is to use single electronic control unit controls two cover fuel supply systems, realize that by a throw over switch controller switches for the control of two cover fuel supply systems, thereby removed original circuit complicated between two controllers and element from, saved the time of communication.Simultaneously, in the utility model the LPG sparger changed into and have a plurality of electromagnetic valve type spargers, when spraying, adopt the consecutive order multi-point injection of liquid LPG, improved the performance of nozzle ejection.
With reference to figure 2, Fig. 2 is the structural drawing of LPG ejecting system of the present utility model, and as shown, the Vehicular liquefied petroleum gas ejecting system 200 that is used for dual fuel supply system of the present utility model comprises:
LPG gas cylinder 202 has delivery outlet and inlet opening, and delivery outlet connects the suction tude in the transmission pipeline, and the inlet opening connects the muffler (this can describe in detail below) in the transmission pipeline.In the embodiment shown in Figure 2, the inlet opening also comprises the connecting head 208 that is used to fill LPG, and it also is connected to the inlet opening of LPG gas cylinder 202 by a pipeline.In the utility model, have the LPG temperature transducer in the LPG gas cylinder 202, will further describe below.
The LPG pump is positioned in the LPG gas cylinder 202, is used to export LPG.In the embodiment shown in Figure 2, have a solenoid valve in the LPG gas cylinder 202, be used to control the working state of LPG pump.
Liquid LPG in the LPG gas cylinder 202 transfers to LPG fuel rail 212 through transmission pipeline, and in this embodiment, transmission pipeline comprises suction tude 211 and the muffler 213 that is used for LPG is transferred to from gas cylinder 202 fuel rail.On the in-and-out pipe of LPG fuel rail 212, has solenoid valve 216.In this embodiment, also comprise LPG pressure transducer 218 in the LPG fuel rail 212, be used to monitor the pressure of LPG.
LPG through LPG fuel rail 212 is assigned to LPG sparger 222 with liquid state, by sparger 222 to engine spray LPG.In the technical solution of the utility model, LPG sparger 222 is the electromagnetic valve type sparger, and comprises a plurality of spargers, adopts the consecutive order multi-point injection when spraying, and the LPG that sprays is liquid.The tempering problem that the utility model often occurs when adopting this liquid order multipoint injection system to solve the continuous direct injection of LPG gaseous state.In addition, nozzle arrangements of the present utility model has adopted similar and electromagnetic valve type sparger petrol injector, can obtain better Performance Match effect, has avoided in the LPG injected in gaseous state because distributor too far causes signal acceptance blunt from sparger.
In the embodiment shown in Figure 2, ejecting system connects also the level meter 228 that shows the LPG liquid level on the combination instrument to the operator cabin.
The basic functional principle of the above embodiments is as follows, and during LPG switch on opening instrument panel (when selecting LPG to be fuel), after detecting through the system of certain hour, the electronic control unit controls system works is in the LPG pattern.The LPG pump is started working, LPG liquid is delivered directly to the LPG fuel rail by solenoid valve and the LPG pipeline of having opened, electronic control unit is according to air input of engine by air, parameters such as engine speed, calculate the quantity of required LPG fuel, and be installed in opening time of the LPG sparger on the LPG fuel rail by control, and determine the quantity of fuel, liquid LPG is sprayed in the intake manifold.
Fig. 3 is the structural drawing according to the specific embodiment 300 of a LPG ejecting system of the present utility model.As shown in Figure 3, comprising:
Liquid LPG in the LPG gas cylinder 302 transfers to LPG fuel rail 324 through transmission pipeline, and the front illustrates that transmission pipeline 324 comprises suction tude 304 and the muffler 308 that is used for LPG is transferred to from gas cylinder 302 fuel rail.On the in-and-out pipe of LPG fuel rail 324, also has solenoid valve 328.Also comprise LPG pressure transducer 330 in the LPG fuel rail 324, be used to monitor the pressure of LPG, also comprise the bleed valve 332 that is used for when maintenance LPG pipeline, being used to bleed off residue LPG in the pipeline.
Working principle of the present utility model is as follows, press the LPG switch of operator cabin the inside after, system does not switch to the LPG pattern at once, system at first detects the amount of the interior LPG of LPG gas cylinder this moment, if LPG is less than certain level, system will can not switch to the LPG pattern.Like this, the very few damage of LPG can be avoided on the one hand, the cornering ability that has the best behind the LPG can also be guaranteed to switch on the other hand for some important LPG parts (as the LPG pump).If also have enough LPG in the gas cylinder, system will begin the LPG system is carried out the detection as 180s-480s of 16 steps, duration when continuing to use the gasoline pattern, and the detection content comprises whether normal whether system exist leakage, the vitals work of LPG system etc.Detect qualified after, system switches to the LPG pattern.In the process of using LPG, if the fault of LPG system takes place, system will close all solenoid valves of LPG system, stops at the work under the LPG pattern at once and switches to the gasoline pattern, has fully guaranteed safety.
The Vehicular liquefied petroleum gas ejecting system that is used for dual fuel supply system of the present utility model has following advantage:
1. the tempering problem that often occurs when adopting liquid order multipoint injection system to solve the continuous direct injection of LPG gaseous state.
2. emitter construction has adopted similar and electromagnetic valve type sparger petrol jet, can obtain better Performance Match effect, has avoided in the LPG injected in gaseous state because distributor too far causes signal acceptance blunt from sparger.
3. adopt an electronic control unit to come integrated control gasoline and two kinds of working staties of LPG, shortened and adopted electronic control unit to control gasoline and two kinds of required communication times of this scheme of working state of LPG respectively, by accurate control fast, make the switching of the imperceptible at all motor of driver between two kinds of fuel.By meticulous coupling, made full use of the high characteristics of LPG anti-knock index, make motor at power and the moment of torsion of burning during LPG, higher slightly than burns gasoline, fuel consumption is more economized, and has really reached energization consumption reduction effect, if be used for taxi, more can save the daily cost of use of hiring a car.It is about 10% that other injected in gaseous state system power torque ratios use gasoline to descend, and fuel consumption increases by 10%.The expense of a controller is more cheap than the electronic control unit price, keeps in repair more convenient.Be easy to controller software is upgraded.
4. it is steady to have realized switching between gasoline and the LPG transition;
5. stable working when using LPG, possible gas-break phenomenon when having avoided injected in gaseous state.The same good starting performance when having when using LPG with use gasoline, cornering ability, idling performance etc.
Though above in conjunction with the accompanying drawings labor an embodiment of the present utility model; but the foregoing description only is the purpose in order to illustrate rather than to limit; one of ordinary skill in the art can be carried out certain modification to the utility model after with reference to top description, this remains within principle of the present utility model and protection domain.Protection domain of the present utility model should be the maximum magnitude that meets the novelty of claim.
Claims (6)
1. Vehicular liquefied petroleum gas ejecting system that is used for dual fuel supply system comprises:
Liquefied petroleum gas cylinder has delivery outlet and inlet opening, links to each other with transmission pipeline;
Liquefied petroleum gas pump is positioned in the described liquefied petroleum gas cylinder, is used to export liquefied petroleum gas (LPG);
The LP gas fuel distribution piping is connected to described liquefied petroleum gas cylinder by described transmission pipeline, has solenoid valve on the in-and-out pipe of described LPG fuel rail;
The liquefied petroleum gas injection device is connected to described LP gas fuel distribution piping, to engine spray LPG;
Electronic control unit is connected to extraction, transmission and the injection of described liquefied petroleum gas cylinder and liquefied petroleum gas injection device, the described liquefied petroleum gas (LPG) of control;
Fuel shift switch links to each other with described electronic control unit, is used for switching between two kinds of fuel supply systems;
It is characterized in that,
Described liquefied petroleum gas injection device is a plurality of electromagnetic valve type spargers, consecutive order multi-point injection liquid liquefied petroleum gas;
Comprise the liquefied petroleum gas (LPG) pressure transducer in the described LP gas fuel distribution piping;
Comprise the liquefied petroleum gas (LPG) temperature transducer in the described liquefied petroleum gas (LPG) storage device;
Described transmission pipeline comprises suction tude and muffler, and the delivery outlet of described liquefied petroleum gas cylinder connects described suction tude, and the inlet opening of described liquefied petroleum gas cylinder connects described muffler;
Described electronic control unit is also connected to the gas supply system control gas supply in the dual fuel supply system, and described throw over switch switches two cover fuel supply systems.
2. the Vehicular liquefied petroleum gas ejecting system that is used for dual fuel supply system as claimed in claim 1 is characterized in that the delivery outlet of described liquefied petroleum gas cylinder has the solenoid valve that carries out flow control.
3. the Vehicular liquefied petroleum gas ejecting system that is used for dual fuel supply system as claimed in claim 1 is characterized in that, also comprises liquid level sensor in the described liquefied petroleum gas cylinder.
4. the Vehicular liquefied petroleum gas ejecting system that is used for dual fuel supply system as claimed in claim 1 is characterized in that, also comprises the aerating limit stoper in the described liquefied petroleum gas cylinder.
5. the Vehicular liquefied petroleum gas ejecting system that is used for dual fuel supply system as claimed in claim 1 is characterized in that, the inlet opening of described liquefied petroleum gas cylinder comprises that one is used to fill the connecting head of liquefied petroleum gas (LPG).
6. the Vehicular liquefied petroleum gas ejecting system that is used for dual fuel supply system as claimed in claim 1 is characterized in that, described ejecting system is connected to the level meter that shows the liquefied petroleum gas (LPG) liquid level on the interior combination instrument of operator cabin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200822686U CN2781014Y (en) | 2004-08-27 | 2004-08-27 | Vehicle liquified petroleum gas injection system for two-fuel supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200822686U CN2781014Y (en) | 2004-08-27 | 2004-08-27 | Vehicle liquified petroleum gas injection system for two-fuel supply system |
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| CN2781014Y true CN2781014Y (en) | 2006-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2004200822686U Expired - Lifetime CN2781014Y (en) | 2004-08-27 | 2004-08-27 | Vehicle liquified petroleum gas injection system for two-fuel supply system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100513759C (en) * | 2007-06-28 | 2009-07-15 | 东风汽车有限公司 | Gas source selection device of electric control natural gas engine |
| CN101443545B (en) * | 2006-05-09 | 2011-09-14 | 罗佤托气体股份公司 | Filtering device for filtering gaseous fuels in systems for supplying gas to internal combustion engines |
| CN102400799A (en) * | 2010-09-13 | 2012-04-04 | 通用汽车环球科技运作有限责任公司 | Fuel tank temperature and pressure management via selective extraction of liquid fuel and fuel vapor |
| CN102418624A (en) * | 2010-09-28 | 2012-04-18 | 现代自动车株式会社 | Liquefied petroleum gas pump |
| CN102733995A (en) * | 2012-06-19 | 2012-10-17 | 潍坊威度电子科技有限公司 | Liquid gas fuel liquid direct-injection device and composite valve of engine |
| CN103511104A (en) * | 2012-06-29 | 2014-01-15 | 曼恩柴油机涡轮股份公司曼恩柴油机涡轮德国分公司 | An internal combustion engine with control of fuel gas injection pressure |
| CN103534465A (en) * | 2011-05-17 | 2014-01-22 | 丰田自动车株式会社 | Control system for multifuel internal combustion engine |
| CN107781065A (en) * | 2016-08-25 | 2018-03-09 | 福特环球技术公司 | Fuel system, internal-combustion engine system and the method that LPG fuel is supplied to internal combustion engine |
| CN110486204A (en) * | 2019-07-12 | 2019-11-22 | 西安交通大学 | A kind of methanol engine air inlet pipe multi-point sequent high-pressure injection system |
-
2004
- 2004-08-27 CN CNU2004200822686U patent/CN2781014Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101443545B (en) * | 2006-05-09 | 2011-09-14 | 罗佤托气体股份公司 | Filtering device for filtering gaseous fuels in systems for supplying gas to internal combustion engines |
| CN100513759C (en) * | 2007-06-28 | 2009-07-15 | 东风汽车有限公司 | Gas source selection device of electric control natural gas engine |
| CN102400799A (en) * | 2010-09-13 | 2012-04-04 | 通用汽车环球科技运作有限责任公司 | Fuel tank temperature and pressure management via selective extraction of liquid fuel and fuel vapor |
| CN102418624A (en) * | 2010-09-28 | 2012-04-18 | 现代自动车株式会社 | Liquefied petroleum gas pump |
| CN102418624B (en) * | 2010-09-28 | 2015-11-25 | 现代自动车株式会社 | For the petrolift of liquefied petroleum gas (LPG) |
| CN103534465A (en) * | 2011-05-17 | 2014-01-22 | 丰田自动车株式会社 | Control system for multifuel internal combustion engine |
| CN102733995A (en) * | 2012-06-19 | 2012-10-17 | 潍坊威度电子科技有限公司 | Liquid gas fuel liquid direct-injection device and composite valve of engine |
| CN103511104A (en) * | 2012-06-29 | 2014-01-15 | 曼恩柴油机涡轮股份公司曼恩柴油机涡轮德国分公司 | An internal combustion engine with control of fuel gas injection pressure |
| CN103511104B (en) * | 2012-06-29 | 2015-04-15 | 曼恩柴油机涡轮股份公司曼恩柴油机涡轮德国分公司 | An internal combustion engine with control of fuel gas injection pressure |
| CN107781065A (en) * | 2016-08-25 | 2018-03-09 | 福特环球技术公司 | Fuel system, internal-combustion engine system and the method that LPG fuel is supplied to internal combustion engine |
| CN107781065B (en) * | 2016-08-25 | 2022-01-21 | 福特环球技术公司 | Fuel supply system, internal combustion engine system and method for supplying LPG fuel to internal combustion engine |
| CN110486204A (en) * | 2019-07-12 | 2019-11-22 | 西安交通大学 | A kind of methanol engine air inlet pipe multi-point sequent high-pressure injection system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140827 Granted publication date: 20060517 |